Envelop.



0. KATZENBERGER.

ENVELOP.

APPLICATION FILED APR. 27. I915.

Patented Oct. 26, 1915.

' WITNESSES.

z .flw. (if/6233M.

A FOR/11E VS m in i l Uid vll ax o KATE'QENIBEEGER, T5 CHICAGO, KlCiLINGXS,

ENVELGTP.

Application file 1 Apri 7; 1915 signed to be used or second rl ss mail mat-- ter, and has for an ohgect the provision oi;

an improved simple structure which will positively hold the matter in the envelop against uceid al movement tliereiirozn vwhile allowing; ,2 all t'rons an examination by postal onthoritieskn' other enthorized over-sons.

A. further object of the invention is to pro ide an improved forzn of envelop in "which a loose flop is utilized for holding nieil matter in an envelop, t io same being associated with What may termed locking tabs in order to prevent, positively, mail matter from moving out of the envelop.

in the :wcompanying drawingsz ihiguro 1 is it plan View or an envelop embodying the invention, the-same being shown in an unfolded condition; 2 is side View of the envelop in positionffor receiving mail matter; "Fig, 3 is a View 0 's the envelop sealed and. the retaining or inspection flap in an unfolded position; F i g. 4. is a sectional View through 3 on line -l.--l-, the same being on enlarged scale,

Referring to the accornp: by numerals, 1 indicates tl'ie body or face of the envelop While 2 and 3 indicate the end flaps, {lap 3 carrying a strip or edge of ad hosive 4: so as to. secure the flaps 2 and 3 together when folded, as shown in F A side flap is also provided with adhesive (5 that when the envelop is position shown in Fig. 2 the mail matter may be inserted in the usual manner and flap sealed in the usual manner. During the n'iann'faeture of the envelop the ends 2 and} are folded together so that the adhelwill connect these two members, and the looking tabs 7 and 8 are folded so to project beneath the Flops and A layer of adhesive is arranged on each of, these tabs so that the tabs may be secured to the end 3 and 4-, as shown more portion;

nying drawings Specification of Letters Eats...

folded to the Patent-rd @Qlt, 52G, Term. 1N0. lznly in Fig. :l. Between the tabs 7 and 8 is arranged an inspection flap 9 loosely folded into the envelop beneath the ends 2 and 3. After the contents has been placed in the envelop, flap is sealed, as shown in Fig. 3, but flap 9 loosely positioned in the envelop and may be withdrawn, as shown in in Ul'ilfil that the lllSlMBCtOlS may inspect the contents ot' the envelop when it is d tired to remove the contents without tearing; the envelop. llhe locking members and S normally prevent the removal of the contents e en when. the flap ll is unfolded, so that a person using the mivelop may be assured that the contents will not accidentally be lost out These locking tabs are inlendcd to prevent accidental losing of the contents but not to prevent in an sense of the ,xvord a proper inspection or even re moral of the contents by an. authorized person. in. arranging the lockino: tabs and inspection. flap a space is prov led therebetween which may be comparatively small or may be comparatively large Preferably, however, the space between the inspection flap 9 and the tabs 7 and fl is only sullicient to allow a. free removal and a tree insertion of the inspection lap at any time.

By the construction and arrangement just described it will be observed that an envelop is presented which may be used by the person using the same as an ordinary envelop and be assured that the contents will remain in the envelop, while the envelop will pass through the mail as second class mail matter.

l r hat l claim is ln. an. envelop of the character described, a body, a pair of end flaps extending from Said body adapted to be folded over on the body, adhesive on one said end flaps for connecting the last mentioned end lap with the other end flap, :1 side flap having adhesive arranged thereon. so that the same say be secured to said end flaps when closed, a l0cling tab adjacent each end of said body and extending therefrom, said locking; tabs being arranged on the opposite side oi, the body to said lisp, a layer of adhesive arranged on sm-h oil said locling tabs on the face contacting; with said end flaps whereby the locking calls may he 1-;e-

cored to said end flaps and provide a son lilo port for the contents of the envelop in. order In testimony whereof I have sigiwd my to prevent an accidental removal thereof, name to this specification in the presence of and an inspection flap arranged between two subscribing witnesses.

said locking tabs, said inspection flap being OSCAR- Ix'ATIZENBERGER 3 spaced from said locking tabs in order to fitnesses:

permit of aneusy inspection and removal AnoLrn PAUs'r, when inspecting the contents of the envelop. OLGA LUNn. 

